public function likeBlogAction($id)
    {
        $user = $this->getUser();
        if ($user == null) {
            return $this->redirectToRoute('fos_user_security_login');
        }
        $em = $this->getDoctrine()->getManager();
        $post = $em->getRepository('BlogBundle:Blog')->find($id);

        $love = new BlogLike();

        $love->setUser($user);
        $post->setLikesnumber($post->getLikesnumber() + 1);
        $love->setBlog($post);
        $em->persist($love);
        $em->flush();

        return $this->redirectToRoute('blog_show', array('id' => $post->getId()));
    }